Math calculator

Statistics Calculator for Data Sets

Calculate mean, median, mode, and standard deviation from a list of numbers.

FormulaMean = sum / count; SD = sqrt(mean squared deviation)

Formula

Summary statistics

Mean = sum / count; SD = sqrt(mean squared deviation)

For 4, 7, 7, 9, 12 the mode is 7.

FAQ5 common questions for this calculator.

FAQs

How many numbers can I enter?+

Start with the default fields, then use Add value to include as many additional numbers as you need.

How does the Statistics Calculator calculate the result?+

For the Statistics Calculator, it uses the Summary statistics: Mean = sum / count; SD = sqrt(mean squared deviation). For 4, 7, 7, 9, 12 the mode is 7.

What information do I need to use the Statistics Calculator?+

For the Statistics Calculator, enter a list of numbers. Keep the units consistent with the calculator fields and compare your setup with the worked example on the page.

How accurate is the Statistics Calculator?+

Statistics Calculator is mathematically reliable for the entered values and selected operation. It follows the Summary statistics. Rounding, order of operations, and undefined cases can still affect interpretation.

What should I check before using the Statistics Calculator result?+

For the Statistics Calculator, check a list of numbers, operation order, rounding precision, and undefined cases before using the result. Compare one changed value at a time when testing scenarios.

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Math guide

How to use the Statistics Calculator

Calculate mean, median, mode, and standard deviation from a list of numbers. The page also explains the summary statistics and shows a practical example: For 4, 7, 7, 9, 12 the mode is 7.

  1. 1

    Enter your details

    Enter a list of numbers, then complete any other fields shown in the calculator.

  2. 2

    Check the calculation

    Review the result alongside the summary statistics: Mean = sum / count; SD = sqrt(mean squared deviation).

  3. 3

    Compare scenarios

    Change one or more inputs to see how they affect the statistics Calculator result before you use the estimate.